This is very important:
BTW, the interference fit is NOT at the same place as the threads. It is below the threads. The threads do not hold the head on during operation.
This, too, is very important:
ICPs during a various mixtures range from 600psi LOP to 1100 psi at 50dF ROP.
20 x 600 = 12,000 pounds of force down on piston and up on head.
20 x 1100 = 22,000 pounds of force down on the piston and up on the head.
NOTE: These are peak pressures (stress) not mean pressures (HP).
Both of the above stress scenarios can actually produce the same HP!!
The former will have CHTs lower by about 50dF.
Thank you Mr Atkinson!
